<template>
    <div>
      <!--      面包谢导航区域-->
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>权限管理</el-breadcrumb-item>
        <el-breadcrumb-item>角色列表</el-breadcrumb-item>
      </el-breadcrumb>
<!--      卡片视图-->
      <el-card>
        <el-row>
          <el-col>
            <el-button type="primary">添加角色</el-button>
          </el-col>
        </el-row>
        <el-table :data="roleList" border stripe>
          <el-table-column type="expand">
            <template slot-scope="scope">
              <el-row :class="['bdbottom',li===0 ? 'bdtop':'','vcenter']" v-for="(item,li) in scope.row.children" :key="item.id">
<!--                一级权限-->
                <el-col :span="5">
                  <el-tag closable @close="removeRightById(scope.row,item.id)">
                    {{item.authName}}
                  </el-tag>
                  <i class="el-icon-caret-right"></i>
                </el-col>

              <!--二级权限-->
                <el-col :span="19" >
                  <el-row :class="[li2===0 ? '': 'bdtop','vcenter']" v-for="(item2,li2) in item.children" :key="item2.id">
                    <el-col :span="6">
                      <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                      <i class="el-icon-caret-right"></i>
                    </el-col>
                    <el-col :span="18">
                      <el-tag v-for="(item3) in item2.children" :key="item3.id" type="warning" closable @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                    </el-col>
                  </el-row>
                </el-col>
              </el-row>
              <pre></pre>
            </template>
          </el-table-column>
          <el-table-column label="#" type="index"></el-table-column>
          <el-table-column label="角色名称" prop="roleName"></el-table-column>
          <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
          <el-table-column label="操作" width="300px">
            <template slot-scope="scope">
              <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
              <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>

      <el-dialog
        title="分配权限"
        :visible.sync="setRightDialogVisible"
        width="50%"
         @close="setRightDialogClosed">
        <el-tree
          :data="rightslist"
          show-checkbox
          node-key="id"
          default-expand-all
          :default-expanded-keys="[2, 3]"
          :default-checked-keys="defKeys"
          :props="treeProps" ref="treeRef">
        </el-tree>
        <span slot="footer" class="dialog-footer">
          <el-button @click="setRightDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="alloRights">确 定</el-button>
        </span>
      </el-dialog>
    </div>
</template>

<script>
export default {
  name: 'Roles',
  data() {
    return {
      roleList: [],
      setRightDialogVisible: false,
      rightslist: [],
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      defKeys: [],
      roleId: ''
    }
  },
  created () {
    this.getRoleList()
  },
  methods: {
    async getRoleList () {
      const {data: res} = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败')
      this.roleList = res.data
    },
    async removeRightById (role, rightId) {
      const confirmResult = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const {data: res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) return this.$message.error('删除权限失败')
      this.$message.success('删除权限成功')
      role.children = res.data
    },
    async showSetRightDialog (role) {
      this.roleId = role.id
      const {data: res} = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) return this.$message.error('获取权限失败')
      this.rightslist = res.data
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    getLeafKeys(node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getLeafKeys(item, arr)
      })
    },
    setRightDialogClosed() {
      this.defKeys = []
    },
    async alloRights () {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const {data: res} = await this.$http.post(`roles/${this.roleId}/rights`, {rids: idStr})
      if (res.meta.status !== 200) return this.$message.error('分配权限失败')
      this.$message.success('分配成功')
      this.getRoleList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style scoped>
.el-tag{
  margin:7px ;
}
  .bdtop{
     border-top: 1px solid #eee;
   }
.bdbottom{
  border-bottom: 1px solid #eee;
}
  .vcenter{
    display: flex;
    align-items: center;
  }
</style>
